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ABB RET543AM243AAAB Digital relay protection device
ABB RET543AM243AAAB is a digital relay protection device belonging to the ABB Relion series, designed specifically for medium and high voltage transmission line protection. The device integrates protection, control, measurement and communication functions, which can quickly detect and isolate faults such as short circuits, overloads and ground faults in transmission lines. It also provides real-time data monitoring and remote control interfaces to ensure the stable operation of power systems. Its design meets power industry standards and can be directly installed in substation switchgear or control panels.
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ABB RET543AM243AAAB Digital relay protection device
Specific Parameters
- Rated power supply voltage: 220V DC/110V DC (optional).
- Allowable range of power supply voltage: 85%-110% of rated voltage.
- Power consumption: Maximum 25W.
- Operating temperature range: -25°C to +70°C.
- Storage temperature range: -40°C to +85°C.
- Relative humidity: 5%-95% (non-condensing).
- Protection class: IP40 (device body).
- Rated current: 1A/5A (optional).
- Rated voltage: 100V (line voltage)/57.7V (phase voltage).
- Protection operation time: Fastest ≤20ms (short-circuit fault).
- Communication interfaces: 1 Ethernet interface (10/100Mbps), 2 RS485 interfaces (supporting IEC 60870-5-103, Modbus protocols).
- Analog inputs: 6 current inputs, 4 voltage inputs.
- Digital inputs/outputs: 16 digital inputs, 10 relay outputs.
- Dimensions: 210mm×170mm×130mm (length×width×height).
- Weight: 1.8kg.
Product Performance
- Accurate protection: Adopts adaptive protection algorithms, which can accurately identify various line faults with fast action speed, ensuring quick fault isolation and reducing power outage range.
- Comprehensive monitoring: Real-time measurement of line current, voltage, power and other electrical parameters with measurement accuracy up to 0.2 class, meeting the metering and monitoring needs of power systems.
- Flexible control: Supports local and remote control operations, enabling circuit breaker opening/closing, reclosing and other functions, with anti-misoperation logic.
- Reliable communication: Multiple interfaces support various power communication protocols, facilitating access to substation automation systems for data upload and remote configuration.
- Anti-interference capability: Complies with IEC 61000-4 series electromagnetic compatibility standards, maintaining stable operation in strong electromagnetic environments to avoid misoperation or refusal to operate.
- Self-diagnosis: Built-in complete self-inspection function, which can monitor the status of device hardware, software and external circuits, and alarm in time when abnormalities occur.
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